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AP Chemistry
5.1 Reaction Rates
IntermediateMCQGraphicalMathematical23.5k
Plot of \([\text{N}_2\text{O}_5]\) versus time with tangent line drawn at \(t = 200\text{ s}\).
Plot of \([\text{N}_2\text{O}_5]\) versus time with tangent line drawn at \(t = 200\text{ s}\).
A student investigates the kinetics of the gas-phase decomposition of \(\text{N}_2\text{O}_5(g)\) at a constant temperature according to the following balanced equation:

\[2\text{N}_2\text{O}_5(g) \rightarrow 4\text{NO}_2(g) + \text{O}_2(g)\]

The student measures the concentration of \(\text{N}_2\text{O}_5(g)\) over time and plots the data shown in the graph. A dashed line tangent to the curve is drawn at \(t = 200\text{ s}\).

Based on the graph, what is the instantaneous rate of reaction at \(t = 200\text{ s}\)?

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